Chaeles koegel



(No Model.)

0. KOEGEL. MACHINE FOR GUTTING'PAPER.

Patented Oot. 23

STATES NiE PATENT rrren.

CHARLES KOEGEL, OF HOLYOKE, MASSACHUSETTS, ASSIGNOR, BY DIRECT AND MESNE ASSIGNMENTS, OF TWO-THIRDS TO DAVID P. WILLIAMS,

OF SAME PLACE.

MACHINE FOR CUTTING PAPER.

SPECIFICATION forming part of Letters Patent No. 391,750, dated October 23, 11888.

(No model.)

To all whom it may concern.- Be it known that I, CHARLES Konenp, of Holyokefln the county of IIampden and Commonwealth of Massachusetts, have invented a 5 new and useful Improvement in Machines for Cutting Paper, of which the following is a specification, reference being had to the ac conipanying drawings, forming part thereof.

My invention relates especially to mechan- 1 ism designed to be attached to and to operate in connection with paper-making machines for slitting the web of paper, after leaving the dricrs, into strips of any desired width, although certain features thereof are applicable I to paper cutting machines generally.

The object of the invention is to provide novel means for supporting and adjusting the cutters whereby a shear-cutting movement between the upper and lower cutters can be socured and wear of the cutting edges compen sated for, and also to provide means for guiding the paper to the cutters in such manner that it will be presented evenly thereto at the edges, as well as at the center thereof.

2 5 To these ends my invention consists in the machine hereinafter fully described, and particularly pointed out in the claims.

Referring to the drawings, in which like letters designate like parts in the several figures,

Figure l is a diagramillustrating the manner in which the web of paper is passed between the rotary cutters. Fig. 2 is a perspective view of themachinc. Fig. 3 is a similar view of a portion of the presser-roll and its bearings.

5 Fig. 4 is a vertical sectional view of one of the pairs of cutters and their supporting and adjusting devices. Figs. 5 to 8, inclusive, are detail views of parts hereinafter described.

The letters A A designate a portion of the 3 frame of a paper-making machine, which, without further illustration, will be understood to be taken at a point immediately in the'rear of the driers. Secured to the upper part of said frame are brackets BB,which support the 5 bar 0, carrying the upper series of cutters, as

hereinafter described. Mounted within bearings in orsecured to the frame A are rolls EF G H, the latter being one of the rolls carrying the felt by which the paper is conducted through the dricrs, and from which motion is transmitted to roll F by means of a belt, f, as shown, or in any other convenient manner,

The rolls F G, which I will call the guide rolls, are located, respectively, in front and rear of the cutters, their function being to guide the paper evenly audio at substantially horizontal plane between the cutters. Provision is madc for vertical adjustment of said rolls F and G to compensate-for wear of their bearings, by means which are illustrated in detail in Fig. 7, said means consisting of blocks gflrnounted within slots in the bearings g and supporting the journals 9 of the rolls, and screws 9, by means of which said blocks can be adjusted vertically within the slots. I 6 am thus enabled to vertically adjust each roll independently and insure the proper guidance of the paper at all times.

The roll E, which I will call the prcsscrroll, is preferably made of wood and with a diameter increasing from its center toward each end, as shown in Fig. 3, its function being to bear upon the web of paper in front of the cutters and counteract the tendency of said web to curl up at the edges, whereby I 7 5 am enabled to make a clean even out along both edges of the paper, as well as through the central portion thereof. The journals 0 of said roll rest in the vertical grooves 12 ofthc blocks P, (see Fig. 3,) said blocks being rigidly secured to the frame A by bolts passing through holes a therein, or in other suitable manner. The blocks may also be provided with a pin,

19, at their upper end, by which the journals of the roll will be retained on the blocks when the roll is raised from its bearings for the purpose of starting a web of paper through the machine. As thus mounted, it will be noted that the roll E is free to move vertically within its bearings, and therefore to rest by gravity 0 upon the paper, bearing upon the latter, however, near its edges only, by reason of the varying diameter of said roll.

The additional roll K, (shown in Fig. 2,) which is journaled in the pivoted arms 7c, is the 9 5 usual roll which guides the paper to the sizeboX, and forms no part of my invention.

The lower series of cutters, M, are secured by screws 2 upon a shaft, L, jonrnaled in bearings in the frame A. (See Figs. 2 and 4.) Said cutters M are of the ordinary disk form, having square cutting-edges m of hardened steel.

As hereinbefore stated, the upper series of cutters, N, are supported by the bar 0, and in order to provide for adjusting said upper cutters both vertically and horizontally with respect to the lower cutters, to compensate for wear of their cutting-edges in addition to the individual adjustment of the upper cutters, presently to be described, said bar 0 is made adjustable upon the frame, as follows: Said bar is secured at each end to standards D, which standards are provided with vertical slots d Each of the brackets B is provided with a horizontal slot, d',and bolts dflinserted through said slots and through the slots in the standards, and having nuts (1* upon their inner ends, serve to hold the standards securely to the brackets, while by loosening the nuts (1* said standards and the bar 0 can be adjusted both horizontally and vertically with respect to the brackets.

In order to provide for very accurate vertical adjustment of the bar, the standardsDare each provided with a flange projecting over the brackets B, in which flanges are seated adjusting-screws d, which bear upon the top of brackets. I am thus enabled by loosening nuts (1 and turning screws (1 to make a very delicate adjustment of the bar 0 at each of its ends.

Each of the upper cutters is mounted within an independent hanger, it, (see Fig. 4,) which hanger consists of two arms extending downwardly from a shank or stem, n. The stem a extends upwardly through acentral longitudinal slot, 0, in the bar 0, and is provided with screw-threads to receive a nut, a, above said bar, and a set-nut, X, below said bar, said nuts being preferably enlarged, as shown, for convenience in turning them.

In order to provide for a limited rotary adjustment of the stem at, I prefer to flatten said stem upon two opposite sides, as shown, making its diameter between said flattened sides slightly less than the width of the slot in .bar 0, while its opposite diameter is or may be greater than the width of said slot. I also prefer to interpose a bearing-plate, WV, between nut 12 and the upper surface of the bar, to prevent abrasion of the surface of the bar at the sides of the slot by said nut, said bearing-plate having the opening 10, corresponding in outline to the shape of the stem in cross-section, (see Fig. 5,) and having the projecting lugs 10, which enter grooves cin bar 0, to prevent rotary movement of said plate.

It will be observed that by loosening setnut X either of the hangers a can be adjusted longitudinally of bar 0 independently of the others, and, furthermore, that each hanger is capable of a limited vertical adjustment within the bar by the co-operation of the two nuts n and X, in addition to their common vertical adjustment with the bar, as previously described. By the longitudinal adjustment referred to provisionis made for cutting the web of paper into strips of various widths, the lower cutters being capable of a corresponding adjustment by loosening their screws Z, and by the double vertical adjustment provision is made for compensating for inequalities in the wear of the cutting-edges of the upper cutters, as well as for a common adjustment of all of said cutters as their diameter is reduced by grinding.

Each of the upper cutters, N, consists of a comparatively thin disk of hardened steel, secured by screws, as shown, or in other suitable manner, to a hub, R. (See Fig. 4.) As shown in Fig. 6, the cutting-edge of the disk is formed by grinding two opposite bevels, n and 12 therein, whereby a very fine and at the same time durable edge is secured. The hub R is centrally bored to receive a bearing-pin, S, and is counterbored, as shown, to form a socket, in which is located a spiral spring, U, which bears at one end against the hub and at the other against a shoulder on the bearingpin, the function of said spring being to normally press the cutting-edge of the cutter N against the cutting-edge of the corresponding lower cutter, as shown in Fig. 4. The bearing-pin S terminates at each end in a conical point, which conical ends are received within conical sockets in the ends of bearing-plugs T, seated within the arms of the hanger a, and retained therein by set-screws, or in any convenient manner. The pins S are thus adapted to revolve in their bearings with a. minimum amount of friction and wear. In order to facilitate the lubrication of said conical bearings, I provide the pin S with an oil-duct, 8, extending centrally through the pin, which registers at each end with the oil-ducts t in the bearing-plugs T, by which means the lubricant inserted in either of the ducts t will thoroughly lubricate the bearings at both ends of pin S, while the pressure of the air at both ends of the duct will prevent the escape of said lubricant.

A lever, V, mounted upon a pivot, v,within aslot in one of the arms of the hanger and having the are shaped head a, is adapted by being raised in such manner that its head 1) is forced against the cutter N to move said cutter upon the pin S in opposition to the stress of spring U, so that its cutting-edge is separated from the lower cutter, and to retain it in such retracted position until said lever is lowered again. Either of the upper cutters can thus be instantly thrown out of and into operative engagement with its lower cutter.

I desire to call particular attention to the fact that by the slight rotary adjustment of the stems a of hangers a, previously described, provision is made for setting the upper cutters at a slight angle to the lower cutters, whereby I am enabled to secure a shear-cutting move- IIO IIS

ment between said eutters,and thus avoid making the ragged edge uponthe paper, which exists when it is cut by cutters Whose cuttingcdges are parallel.

The operation of the machine will be obvious from the above description and by reference to Figs. 1 and 2 of the drawings. The web of paper, after passing through the driers, is led over roll F, roll E being raised from its bearings to facilitate the operation, thence between the upper and lower cutters, which have been adjusted longitudinally of bar and shaft L to make the strips of the desired width, and the upper cutters being held out of contact with the lower cutters by the levers V, thence over roll G, beneath roll K, and so on to the size-box and succeeding parts of the papermaking machine. The levers V are then lowered, permitting the springs U to force the upper against the lower cutters, roll E is dropped into its bearings where it rests upon the paper, and the machine is started. The movement transmitted to roll F from the felt roll H exercises sufficient draft upon the paper to prevent undue strain thereon when passing the cutters, while the pressure exerted by roll E at the edges of the web causes said edges to be presented evenly to the eutters,and enables the latter to sever the narrow strips 0 0* therefrom and leave a perfectly even edge to the strips 0 0.

As hereinbefore described, the necessary adjustments to adapt the machine to out different widths of paper can be quickly and convenientl y 1nade,as can also the adjustments to compensate for wear of the cutting-edges of individual upper cutters, or the common adjustment of all of said cutters to compensate for reduction in their diameter by grinding, Ste.

The machine as thus constructed contains certain features which are applicable to papercutting machines generally, and I therefore do not wish to limit myself to their use in connection with a machine for making paper.

It is obvious, also, that various modifications in the details of construction shown and described could be made without departing from the spirit of my invention.

Having thus fully described my invention, what I claim, and desire to secure by Letters Patent is- 1. In a machine for cutting paper, a series of rotary cutters adjustably secured upon a shaft, in combination with a vertically and horizontally adjustable bar supported above said shaft, a series of hangers adjnstably secured to said bar, and a rotary cutter jou rnaled in each of said hangers, substantially as set forth.

2. In a machine for cutting paper, comprising a series of upper and lower rotary cutters, guide-rolls located both in front and rear of said cutters, said guide-rolls having theirjournals resting upon vertically-adjustable bearing-blocks, and screws for adjusting said bearing-blocks, substantially as and for the purpose described.

3. The combination, with frame A and roll H, of rolls F G and shaft L, journaled in said frame, said shaft carrying a series of rotary cutters, M, vertically and horizontally adjustable bar 0, mounted upon said frame above said shaft, a series of hangers, n, adjustably secured to said bar, a rotary cutter, N, journaled in each of said hangers, and means for transmitting motion from roll H to roll F, arranged and operating substantially as described.

4. The combination, with frame A, having the brackets B secured thereto, said brackets being provided wit-h horizontal slots (1, of standards D, having the vertical slots d, bolts (1, passing through the slots in said brackets and standards, adj usti ng-screws (Z, seated in a flange on said standards and bearing upon the brackets, bar 0, secured to said standards, shaft L, journaled in said frame,carrying aseries of rotary cutters, and a series of hangers depending from said bar 0, each of which hangers carries a rotary cutter, substantially as set forth.

5. The combination, with bar 0, having grooves c in its upper surface, and having slot 0, of the hangers 12., having stems of inserted through said slot, nuts 11. and X upon said stem above and below the bar, respectively, plate NV, having the opening 10, and lugs 10, interposed between said nut a and the bar, and cutters N, journaledin said hangers, substantially as described.

6. The combination, with hangers a, of cutters N, journaled therein, springs U, pressing said cutters laterally in one direction, and 1evers V, pivoted upon said hangers and adapted to move said cutters laterally in the opposite direction, substantially as and for the purpose set forth.

7. The combination, with hangers a, of bearing-plugs T, secured thereto, said plugs having conical sockets, as shown, and oilducts 2f, leading thereto, bearing-pins S, having conical ends seated in said bearing-plugs, and having an oil-duct, 8, extending centrally therethrough, hubs R, mounted upon said pins, and cutters N, secured to said hubs, substantially as described.

8. The combination, with the frame A, guide-rolls F and G, journaled therein, and cutters M N, of roll E, mounted upon said frame in front of the cutters in such manner as to have free vertical movement, said roll having a gradually-increasing diameter from its center toward both ends, substantially as and for the purpose described.

9. The combination, with frame A, having journaled therein shaft L, carrying the series of rotary cutters M, having square cuttingedges m, of vertically and horizontallyadjustable bar 0, mounted upon said frame above said shaft, said bar having slot 0, a series of hangers, n, having their stems n inserted and individually, both vertically and at an through the slot in said bar, nuts n and X, angle to the plane of the cutting-edges of cut- [0 mounted upon said stems 11 above and below ters M, substantially as and for the purpose the bar, respectively, and a rotary cutter, N, set forth.

having the beveled cutting-edge n n, jour- CHARLES KOEGEL. naled in each of said hangers, whereby prolVitncsses:

vision is made for adjusting the cutters N, \V. H. CHAPMAN,

collectively, both vertically and horizontally, G. MOORE. 

